Beta-acetyltrimethylenetetramethyldiamin.



UNITED STATES PATENT OFFICE.

GEORG- MERLING, OF ELBERFELD, AND HUGO KOHLER, OF LEVERKUSEN, NEAR CO- LOGNE, GERMANY, ASSIGNORS 'IO FARBENFABRIKEN VORM. FRIEDR. BAYER & 00., OF ELBERFELD, GERMANY, A CORPORATION OF GERMANY.

BETA-ACETYLTRIMETHYLENETETRAMETHYLIDIAMIN.

Specification of Letters Patent. Patented Aug. 19, 1913,

No Drawing. Original application filed October 8, 1912, Serial No. 724,635. Divided and this application filed November 7, 1912. Serial No. 730,017.

To all whom it may concern.

Be it known that W6,'GEORG MERLING and HUGO KiJ'HLER, doctors of philosophy, chemists, citizens of the German Empire, residing, respectively, at Elberfeld and Leverku'sen, near Cologne, Germany, have invented new and useful Improvements in Beta-Acetyltrimethylenetetramethyldiamin, of which the following is a specification.

The present invention concerns theproduction of the hitherto unknown ketodiamin of the formula:

which is obtained by the two-fold introduction of the residue -CH N.(CH into acetone.

In order to illustrate the new process more fully the following example is given, the parts being by weight:765. parts of an aqueous dimethylamin solution (58.77 per cent.) are gradually dropped into 750 parts of aqueous formaldehyde per cent.)

moved'by distillation. The residue, a brown oil, is distilled in 'vacuo and the fraction from 94 C. (19-20 mm.) a colorless oil (800 parts) is collected. The mixture thus obtained consists of about 33 per cent. of beta-acetylethyldimethylamin and 67 per cent. of beta-acetyltrimethylenetetramethyl diamin.

The beta-acetyltrimethylenetetramethyldiamin is a thick colorless almost odorless oil boiling at 9698 C. (16 mm.). It is soluble in water and is split up by heating it with dilute sulfuric acid into dimethylamin and beta-acetyl-allyl dimethylamin.

In our application Serial .No. 724,635 is described and claimed a process of producing keto compounds including the novel keto compound of the present application.

We claim As a new article the beta-acetyltrimethylenetetramethyldiamin which is a thick colorless, almost odorless oil boiling at 9698 C. (16 mm.); being soluble in Water; and being split up by heating it with dilute sul turic acid into dimethylamin and betaacetyl-allyl-dimethylamin, substantially as described. y

In testimony whereof we have hereunto set our hands in the presence of two subscribing witnesses.

GEORG lVIERLING'. 1. 8.] HUGO KOHLER. [L.s.]

. Witnesses:

IIEIEN NUFER, ALBERT NUTEER. 

